* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

.preload {
    position: fixed;
    top: 0;
    width: 100%;
    height: 100vh;
    background: #77b3d4;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: all 5s ease;
    z-index: 99999;
}
.cloud1,
.cloud2,
.cloud3 {
    height: 100px;
    position: absolute;
    right: 0;
}

.cloud1 {
    top: 25%;
    transform: translate(100%,-25%);
    animation: clouds 3s ease infinite;
}
.cloud2 {
    top: 50%;
    transform: translate(100%,-50%);
    animation: clouds 3s ease infinite 2s;
}.cloud3 {
    top: 75%;
    transform: translate(100%,-75%);
    animation: clouds 3s ease infinite 1.5s;
    
}

.airplane {
    height: 200px;
    animation:  airplane 1s infinite alternate;
}
.preload h3 {
    position: absolute;
    top: 75%;
    transform: translateY(-75%);
    color: #fff;
    font-size: 30px;
    font-family: sans-serif;
}

.preload-finish {
    opacity: 0;
    pointer-events: none;
}

@keyframes airplane {
    from {
        transform: translateY(0px);
    }
    to {
        transform: translateY(50px);
    }
}

@keyframes clouds {
    from{
        right: 0%;
    }
    to {
        right: 130%;
    }
}